The Rhesus factor of blood was first identified in a category of? by Sunday | Sep 8 | Biology JAMB | 0 comments A. monkeys B. human females C. human males D. chimpanzees Correct Answer: Option A – monkeys Users Also Read These:The category of public service that has the closest…Which of following pairs of scientists discovered…The highest category of rural settlement is the?A woman with Rhesus negative blood group was advised…What is the probability of producing a child of…